|
|||||
|
|
| 石灰预处理和干发酵对稻草热解特性影响 | |
| 引用本文： | 梁越敢,程备久,司友斌,曹德菊,郑正,罗兴章.石灰预处理和干发酵对稻草热解特性影响[J].环境工程学报,2013,7(2):701-704. |
| 作者姓名： | 梁越敢 程备久 司友斌 曹德菊 郑正 罗兴章 |
| 作者单位： | 1. 安徽农业大学资源与环境学院,合肥,230036 2. 安徽农业大学安徽省生物质重点实验室,合肥,230036 3. 复旦大学环境科学与工程系,上海,200433 |
| 基金项目： | "十二·五"滇池水专项(2012ZX07102-004,2012ZX07102-003-002);上海市自然科学基金资助项目(11075039) |
| 摘 要： | 深入研究生物质热解有助于热解机理的理解,利用热重分析来探讨石灰预处理和干发酵对稻草热解特性的影响。结果表明:预处理使木质素和半纤维素含量增加,而干发酵使VS、半纤维素和纤维素含量降低;预处理和干发酵改变稻草热解特性,但未改变稻草的热反应机理;热解一级动力学方程很好模拟稻草热解的主失重阶段,稻草热解活化能数值为42.3～47.8 kJ/mol,属于正常范围;预处理降低反应活化能,而干发酵增加反应活化能。这为秸秆及其干发酵残渣的气化提供了重要的设计依据。 |
| 关 键 词： | 稻草 热解 动力学 石灰预处理 干发酵 |
Effect of lime pretreatment and dry digestion on pyrolysis characteristics of rice straw |
|
| Liang Yuegan,Cheng Beijiu,Si Youbin,Cao Deju,Zheng Zheng and Luo Xingzhang.Effect of lime pretreatment and dry digestion on pyrolysis characteristics of rice straw[J].Techniques and Equipment for Environmental Pollution Control,2013,7(2):701-704. | |
| Authors: | Liang Yuegan Cheng Beijiu Si Youbin Cao Deju Zheng Zheng and Luo Xingzhang |
| Institution: | School of Resource and Environment, Anhui Agricultural University, Hefei 230036, China;Key Laboratory of Crop Biology of Anhui Province, Anhui Agricultural University, Hefei 230036, China;School of Resource and Environment, Anhui Agricultural University, Hefei 230036, China;School of Resource and Environment, Anhui Agricultural University, Hefei 230036, China;Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China |
| Abstract: | It was help to understand pyrolysis mechanism that biomass pyrolysis would be deeply studied. The change in pyrolysis characteristics of rice straw from lime pretreatment and dry digestion was discussed by using thermo-gravimetric analyzer. The results showed that lime pretreatment increased the relative content of lignin and hemicellulose. whereas dry digestion reduced the relative content of VS, cellulose and hemicellulose. The lime pretreatment and dry digestion changed pyrolysis characteristics of rice straw, but pyrolysis mechanism would not change at treated phase. The part of main weight loss was well modeled by the first-order kinetic equation, and the kinetic parameters of pyrolysis of rice straw was belonged to the usual range reported by literatures. The increase in activate energy appeared at pretreatment phase, whereas the decrease in activate energy occurred at digestion phase. This study provided useful parameters for the design of pyrolysis reactor for straw and its fermented residues combustion. |
| Keywords: | rice straw pyrolysis characteristics kinetic lime pretreatment dry digestion |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《环境工程学报》浏览原始摘要信息 | |
| 点击此处可从《环境工程学报》下载免费的PDF全文 | |